Impregnation of textile fabrics



Feb. 19, 1935. NE 1,992,062

IMPREGNATION OF TEXTILE FABRICS FiledSept. 4, 1931 2 Sheets$heet lINVENTOR ATTORNEYS Feb. 19, 1935. J, H. FENNER I 1,992,062

IMPREGNATION OF TEXTILE FABRICS Filed Sept. 4, 1931 2 Sheets-Sheet 2M/VIF/VTOR A! (92 HTTORNZ'Z Patented Feb. 19, 1935 UNITED STATES PATENTOFFICE ILIPREGNATION F TEXTILE FABRICS Application September 4, 1931,Serial No. 561,267 In Great Britain September 4, 1930 2 Claims.

The present invention relates to improvements in the impregnatioin oftextile fabrics and'is more particularly suitable for the impregnationof multiple ply woven textile material suitable for use as machinebelting and the like purposes.

Various devices are known for conditioning yarns prior to weaving bydamping or sizing.

According to the present invention impregnating material preferablyrubber latex is applied to the warp and weft or the warp alone or theweft alone in the shed of a loom during the weaving process of a textilefabric.

The invention is more particularly described with reference to theaccompanying drawings in which:-

Figure 1 is a diagrammatic plan view of a loom having the impregnationdevice of the present invention.

Figure 2 is a corresponding partial end view.

Figure 3 is a corresponding partial side view.

Figure 4 is a detail side view of a. modification.

Stabilized rubber latex, rubber solution or other impregnation materialin liquid form is passed to flexible pipe connections 1, 2 of a pair ofspraying nozzles, 3, 4, which are mounted on arms 5, 6, respectivelypivoted adjustably on pivots '7, 8, and having at their inner endsrollers 9, adapted to engage with cams l1,.12 respectively on a shaft 13rotated constantly or intermittently from the main driving shaft of theloom. The earns 11, 12 are so timed that the spraying nozzles on theends of the pipes 3, 4 are moved into the shed usually immediately aftereach pick of the shuttle, and as soon as the shuttle is clear of theshed, the flexible pipes 1, 2 being connected to a. pump, feeding rubberlatex or the like impregnation material so that the nozzles on the endsof the pipes 3, 4 spray impregnation material upon the textile fabric atthe beat-up place. The warp is shown diagrammatically at 13, and thefinished textile fabric at 14.

In certain cases either additionally to or alternal'ively to the nozzles3, 4 external fixed nozzles 15 may be used, either above or below thewoven fabric 14.

In the case of multiple ply fabric a plurality of spraying nozzles maybe swept over the area between the raised and lower warp of each ply andalso on the outer or exterior surface of the warp at each pick. Thespray of latex may further if desired be arranged to impregnatesimultaneoasly the weft of the preceding pick.

Alternatively, instead of spraying stabilized rubber latex otherimpregnating materials may be used, such as vulcanized or unvulcanizedrubber in a solvent, such as naphtha, or bituminous preparations insolvents or other suitable waterproofing or impregnating materials.

It will be preferred that the spraying or treatment of the fibre withthe impregnating compound by insertion of the spraying nozzle into theshed takes place immediately prior to the beating-up.

Either the warp or the weft yarns or both may be pretreated with'material having a cooperative action with the impregnating substance,that is to say, for instance, in the case of latex the warp or .weftyarns or both may be pretreated with sulphur or sulphur compounds whichwill assist in the self-vulcanization of the rubber in the latex.

Where rubber latex is used this may either be the ordinary stabilizedrubber latex of commerce or vulcanized and stabilized rubber latex.

As above stated, in shedding, the dwell may be such as to allow fulltime for the passage of the shuttle, and for the nozzles 3, 4 oralternatively, the shed may remain open for two strokes of thecrank-shaft; that is to say that on the making of the shed the shuttlepasses through and the beat-up takes place, the shed remaining open,then the reed recedes, the spraying-nozzles enter and withdraw from theshed, and the beat-up is repeated.

The reed recedes again, the next shed is formed and the cycle ofoperations repeats.

With the illustrated form, in withdrawing, the levers 5, 6 entirelyremove the nozzles 3, 4 from the shed prior to the next pick of theshuttle, so that there is no danger of. collision between the shuttleand the spraying nozzles. Also, the nozzles and pipes are removed fromthe path of the shuttle and reed prior to the operation of thesestructures. For this purpose, the shedcontrolling mechanisms permit adwell during which the nozzles are inserted, the impregnating substancessprayed, the nozzles withdrawn and the second beating by the reedaccomplished, in addition to the usual dwell for the shuttle movementand the first heating.

The spraying nozzles, such as 3, or 4 may be inserted from one side onlyof the shed, or again, thev spraying nozzles may be arranged upon a reedmade hollow for this purpose.

I declare that what I claim is:-

1. A method of impregnating textile fabrics consisting in pre-treatingcertain of the yarns with a cooperative vulcanizing material and thenapplying impregnating material adapted to be vulcanized by saidpre-treating material, to the yarns forming the fabric in the shed of aloom during the weaving process.

2. A textile weaving loom including fabric weaving devices, sprayingnozzles for impregnation material and means to move said nozzles intothewarp shed in timed sequence with the fabric weaving devices.

JOSEPH HENRY FENNER.

